import java.util.Timer;
import java.util.TimerTask;

public class Demo35 {
public static void main(String[] args) {
    Timer timer = new Timer();
    timer.schedule(new TimerTask(){
        @Override
        public void run() {
            System.out.println("定时器执行");
        }
    },1000);
    System.out.println("定时器启动");
}
}
